1. From the Division of Trauma and General Surgery, Department of Surgery (J.L.S., J.B.B., L.H.A., B.S.Z., M.D.N., M.R.R., R.M.F., T.R.B., A.B.P., M.S.Z.), and the Departments of Emergency Medicine (F.X.G., C.W.C., D.M.Y.) and Critical Care Medicine (B.J.E.-Y., P.W.A.), University of Pittsburgh Medical Center, and the Department of Pathology, University of Pittsburgh and Institute for Transfusion Medicine (M.H.Y., D.J.T.), Pittsburgh, and University of Pittsburgh Medical Center, Altoona Hospital, Altoona (A...